Greg Inglis suffers knee injury in Origin decider

Greg Inglis is facing up to eight weeks on the sidelines after suffering posterior criuciate ligament damage to his knee in Wednesday night's Origin decider.

Inglis injured his knee in the first half but opted to come out for the second, despite the pain and the chance of further aggravating the injury. South Sydney supporters will be sweating on the results of scans, which have been ordered for Thursday.

Rabbitohs blow: Greg Inglis could be out for two months. Photo: Getty Images

As similar injury sidelined Queensland fullback Billy Slater last year. Maroons medico Dr Roy Saunders said Inglis didn't appear to suffer any further damage as a result of returning for the second half. Saunders described his effort to play through the pain as "very brave".

"GI made the final decision, we informed him of all the pros and cons in regards to the injury and he made his final decision," he said.